The Sound of Silence is a popular song written by Paul Simon and released in 1964. It has been covered by many artists since then, and its lyrics have become iconic. The crossword solutions for the term 'Sound of Silence' are SHH (3 letters) and LONGI (5 letters). SHH is an onomatopoeia that is used to indicate silence, while LONGI is an abbreviation of the Latin phrase 'Lux in tenebris lucet, ' which translates to 'Light shines in darkness.' Together, these two solutions represent the idea of silence and the light that can be found within it.